Rotary engine.



No. 802,843. PATENTED OCT. 24, 1905. G. M. GOR-NBLISON 6; W. B. MATLAGK.ROTARY ENGINE.

APPLIOATION FILED MAY 10.1905.

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23 i mm PATENTED OCT. 24, 1905. G. M. OORNELISON & W. B. MATLAGK.

ROTARY ENGINE.

ED MAY10.1905.

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ifiis "Iii fl nt 3 mm "@016. @m/wow No. 802,848. PATENTED OCT. 24, 1905.G. M. OORNELISON & W. B. MATLAUK.

ROTARY ENGINE.

APPLICATION FILED MAY 10. 1905.

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UNITED STATES PATENT @EFIOE.

CLARENCE M. CORNELISON AND WILLIAM B. MATLACK, OF MAHAFFEY,PENNSYLVANIA.

Specification of Letters Patent.

Patented Oct. 24:, 1905.

Application filed May 10, 1905. Serial No. 259,745.

To all whom it may concern.-

Be it known that we. CLARENCE M. CORNELI- soN and WILLIAM B. MATLAOK,citizens of the United States, residing at Mahaffey, in the county ofClearfield, State of Pennsylvania, have invented certain new and usefulImprovements in Rotary Engines; and we do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to steam-engines, and more particularly to thoseof the rotary type, and has for its object to provide an engine of thiskind which will be simple in arrangement, which will include few parts.and which may be manufactured at a low figure.

Other objects and advantages will be apparent from the followingdescription, and it will be understood that changes in the specificconstruction shown and described may be made within the scope of theclaim and that any suitable materials may be used without departing fromthe spirit of the invention.

In the drawings forming a portion of this specification, and in whichlike numerals of reference indicate similar parts in the several views,Figure 1 is a side elevation of the present invention. Fig. 2 is a viewlooking at right angles at Fig. 1. Fig. 3 is a central vertical sectiontaken on line 3 3 of Fig. 2. Fig. 4 is a section on line 4 A of Fig. 1.Fig. 5 is a detailed perspective View of the packingrings. Fig. 6 is alongitudinal section of a triple expansion-engine embodying the presentinvention. Fig. 7 is a transverse section through one of the pistonsshown in Fig. 6 and illustrating the arrangement of the sliding members.

Referring now to the drawings, the present invention comprises acylinder 5, having a passage 6 formed therethrough and opening throughits ends 7. The lower portion of this passage is enlarged, as shown at8, and one end of this enlargement lies in the central horizontal axisof the cylinder. as shown at 9. At its other end the enlargement 8extends somewhat above the end 9 and slants upwardly and inwardly, asshown at 10. With the exception of its end portions 9 and 10 the outerwall of the enlargement 8 follows a continuous curve, and the upperportion of the passage is similarly curved. The bore of the cylinder isthus bounded by two concentric curves of different radii which areconnected by straight portions, one extending radially of the curves,while the other extends at obtuse angles thereto. Removably securedagainst the end faces 7 of the cylinder there are plates 11, havingcircular openings 12 therein which register with the upper portion ofthe passage 6, the plates 11 thus closing the ends of the enlargement 8,and these plates are provided with flanges 13, extending into theiropenings 12 and lying flush with the outer faces of the plates.Connected at their ends with the plates 11 and extending outwardlytherefrom are a plurality of legs 14,

which join at their outer ends to form boxings 15, in which there arejournaled the end portions of the shaft 16, which extends through thepassage 6 and lies concentric with the curved portions of the wallsthereof.

Mounted upon the shaft 16 there are a pair of tapered cross-sectionall ycircular members 17, the minor ends of which are directed outwardly, oneof these members being disposed within the inclosure of the legs 14 ofeach plate 11, and at their inner ends these members 17 are providedwith flanges 18, which lie within the openings 12 of the plates 11 andagainst the inner surfaces of the flanges 13. The members 17 includeshoulders 19, which extend at right angles to the flanges 18 and lie inspaced relation to the inner faces of the flanges 13, and in each ofthese spaces there is engaged a pair of packing-rings 20. These pairseach consist of an inner ring 21, which is split, as shown at 22, andwhich is thicker at one side than at the other, so that the inner andouter peripheries of the ring lie eccentrically to each other. The ring21 of each pair lies within the other ring 23 of the pair, the openingsthrough these rings 23 being located eccentrically with respect to theouter peripheries thereof, and these rings 23 are split, as shown at2 1. The openings through the rings 21 receive the shoulders 19 of themembers 17 therewithin, and the rings are provided with wrench-receiving openings 25 in their outer faces by which they may be moved,and it will be observed that the rings may be moved with respect to eachother to cause the outer rings to expand and fit tightly within theinclosures of the flanges 13.

A piston 26 is provided, which includes two sections 27, which areslightly less than semicylindrical in form, and the curvature of thesesections is such that they fit snugly within the upper portion of thepassage 6, the sections being secured with their ends against the innerfaces of the members 17 and with their inner flat faces 28 in spacedrelation to each other, these faces lying parallel, as shown. There isthus formed a transverse passage 29 through the piston, and in thispassage there is slidably mounted a plate 30, having its opposite ends31 and 32 beveled, as shown, and this plate is of a length to lie Withits extremities against the inner surface of the cylinder at oppositepoints thereof.

Formed in the cylinder 5 there is a steaminlet passage 33, which opensat one end through the end 9 of the enlargement 8 and at its other endthrough the outer wall of the cylinder, this passage having asteam-supply pipe-34 connected therewith. An exhaustpassage 35 opens atone end through the end 10 of the enlargement 8 and communicates with anexhaust-pipe 36, extending outwardly of the cylinder. It will thus beseen that if steam be admitted to the cylinder through the passage 33 itwill strike the portion of the plate 30 which extends into theenlargement 8 and will revolve the piston and the shaft 16 until thisportion of the plate 30, or rather the beveled end thereof, comes intoengagement with the slanting end 10 of the enlargement 8, when the plate30 will be moved through the passage 29 to project its opposite endportion into the enlargement where it receives the pressure of the steamadmitted through the passage 33 to further rotate the piston. By reasonof the fact that the portion of the plate 30 which lies within theenlargement 8 extends between the ingress and egress ports of the steamthe latter is prevented from passing from the cylinder until thisportion of the plate has moved over the slanting end 10 of theenlargement to expose the exhaust-passage, when the expanded steam thenwithin the enlargement is free to pass off through the exhaust-passage.

In Fig. 6 there is shown a modification in which the present inventionis illustrated as embodied in a triple expansion-engine, thisengine'comprising a plurality of cylinders A, having pistons Btherewithin, which are mounted upon a common shaft 0, and these pistonsare provided with intersecting transverse passages 1) and E, whichextend at right angles to each other and which correspond to the passage29. Sliding members F and G, corresponding in arrangement and operationto the plate 30, are engaged in the passages D and E, the member Fhaving a reduced portion H intermediate of its ends which is slidablyengaged in a slot 1, formed in the member G. Pipes K are provided whichare arranged to conduct the exhauststeam from one cylinder to theinlet-passage of the next cylinder.

Vhat is claimed is A rotary engine comprising a cylinder having its boreopening through its ends, said bore being bounded by oppositely-directedconcentric arcs of different radii the ends of said arcs being connectedby two portions one extending radially of the arcs and the otherextending at obtuse angles thereto, said cylinder having aninlet-passage opening through the first named of said connectingportions and an outlet-passage opening through the other connectingportion, plates secured against the ends of the cylinder and havingalining openings therethrough said openings registering with the lesserarc, said plates having flanges extending into the openings at the outerportions thereof, brackets carried by the plates a shaft journaled inthe brackets and extending through the cylinder, members mounted uponthe shaft and lying in spaced relation to the inner peripheries of theflanges and within the inclosures thereof, expansible packing-ringsengaged with the members and lying within the inclosures of the flanges,flanges carried by members at the inner ends of the latter and lyingwithin the openings of the plates and against the inner faces of thefirst-named flanges, a piston including spaced sections secured at theirends to the inner surfaces of the members said piston lying inengagement with the inner wall of the cylinder which follows the lesserarc and lying in spaced relation to that portion following the greater.arc, and a member slidahly engaged between the sections of the pistonand lying with one of its end portions in the space between the pistonand the portion of the cylinder following the greatest are with itsextremity in engagement with said portion, said end portion of themember being adapted for engagement of the second-named connectingportion of the bore of the cylinder for movement of the member toproject its opposite end portion beyond the piston.

In testimony whereof we affix our signatures in presence of twowitnesses.

CLARENCE M. CORNELISON. \VlLLlAM B. MATLACK. Witnesses:

W. W. MoQUowN, GEO. L. FLETCHER.

